The Autobots try to warn Cybertron of Megatron's spy.

David Kaye
Optimus Prime (voice)

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Bumper Robinson
Bumblebee (voice)

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Corey Burton
Ratchet (voice) / Megatron (voice)

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Bill Fagerbakke
Bulkhead (voice)

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Jeff Bennett
Prowl (voice)

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Tara Strong
Sari Sumdac (voice)

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Tom Kenny
Isaac Sumdac (voice)

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Phil LaMarr
Jazz (voice)

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Guest stars